Fix segfault in openssl app called with no args.

This is a result of removal of interactive mode.
Redirected it to now use 'openssl help'.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12164)

1 files changed, 25 insertions, 0 deletions

diff --git a/test/recipes/20-test_app.t b/test/recipes/20-test_app.t
new file mode 100644
index 0000000000..e7246565f2
--- /dev/null
+++ b/test/recipes/20-test_app.t
@@ -0,0 +1,25 @@
+#! /usr/bin/env perl
+# Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the Apache License 2.0 (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+use strict;
+use warnings;
+
+use OpenSSL::Test;
+
+setup("test_app");
+
+plan tests => 3;
+
+ok(run(app(["openssl"])),
+   "Run openssl app with no args");
+
+ok(run(app(["openssl", "help"])),
+   "Run openssl app with help");
+
+ok(!run(app(["openssl", "-help"])),
+   "Run openssl app with incorrect arg");